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Blogmaster: Dr. Eldridge M. Mount III

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10

We are seeing differences in tape testing and lamination adhesion behavior

Posted by Eldridge Mount on February 10, 2012
The Blog recently received the following two-part question: Why do inks applied to a corona treated polyester film pass tape adhesion test but completely transferred to the polyethylene film side after lamination with solvent less two component adhesive? Is there any test other than a tape test by w...

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02

What is the setting difference for plasma-treating BOPP and BOPET?

Posted by Eldridge Mount on January 2, 2012
After reading the October 31, 2011 posting “Plasma treatment and treatment retention”, Yanti asks: Should the plasma setting be different for BOPP and BOPET? And if yes, 1.       What is the setting difference (gas composition or electric power)?  ...

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07

Choosing a plasma treater for a metallizer

Posted by Eldridge Mount on December 7, 2011
Q: Asim Fazal has asked a question from the “Plasma treatment and retention” posting from October 31, 2011. “We have a metallizer, and we want to add plasma treatment unit. Kindly help us to choose the brand you recommend.” A: Wish it was that easy, but such a recommendati...

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09

Priming metallized films

Posted by Eldridge Mount on November 9, 2011
Question: Francesca asks “is it possible to avoid the problem of consistent wetting and reaction of the primer and the aluminum oxide surface of the metallized films by using a particular adhesive (for example with amino silanes) for the lamination?” Answer:  This is a good questio...

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09

Priming metallized films

Posted by Eldridge Mount on November 9, 2011
Question: Francesca asks “is it possible to avoid the problem of consistent wetting and reaction of the primer and the aluminum oxide surface of the metallized films by using a particular adhesive (for example with amino silanes) for the lamination?” Answer:  This is a good questio...

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06

Question about orange-peel defect in BOPET

Posted by Eldridge Mount on November 6, 2011
In a reply to the post of orange peel or melt disturbance a reader asks: “I am producing BOPET film and some of our customers are complaining for ORANGE PEEL defect but we are unable to understand that this defect can be in BOPET film also.  Please suggest possible causes and ways to rec...

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03

Speck formation in PE laminates

Posted by Eldridge Mount on November 3, 2011
Question:  Why are there specks present in foil or metallized base laminate? The structures we see them in are: PET/foil/PE or BOPP/foil/PE. Answer: There is a lot you have left out of your question so a definitive answer will not be possible. First off you don’t give a description of th...

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01

Gels in EVA extrusion coatings

Posted by Eldridge Mount on September 1, 2011
A Producer of BOPP asks; We are using EVA, extruded on BOPP or BOPET and we are always struggling to minimize gel.  What is the cause of gel and how to eliminate?   Reply:  In general EVA is sensitive to gel formation due to thermal degradation and crosslinking.  So first you s...

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20

How do tensile properties and molecular orientation correlate?

Posted by Eldridge Mount on July 20, 2011
I have received the following very interesting question: Does tensile strength and orientation level move in a positive linear direction, and what if any forces could cause one to increase without impacting the other? For example: Can orientation increase with tensile properties being static? Reply...

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14

Delamination of adhesive lamination after several weeks

Posted by Eldridge Mount on July 14, 2011
Problem: We have laminated BOPP / ink / solvent less adhesive / metallized BOPP for several years, but nowadays we are finding delamination problem. Question: The delamination occurs between adhesive and metallized BOPP face. The adhesive comes from the metallized surface to ink after some weeks of...

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Blogmaster

Eldridge Mount photo Dr. Eldridge M. Mount III

Dr. Mount is an independent consultant in the coextrusion, extrusion, film, metallization and film converting industries. He is a leader in the development of metallized films for barrier applications and film laminations. His expertise is in oriented film product and process research, the design and implementation of extrusion systems and coextrusion die specification and system specification including installation and start-up. He is also recognized for trouble shooting mono and biaxial orientated film and sheet coextrusion, melt casting and melt pinning, and film surface treatment by corona, flame and plasma systems. EMMOUNT Technologies, LLC offers consulting and technical training in film orientation, barrier technologies, coextrusion and extrusion and measures polymer melt viscosity with a capillary rheometer.

Eldridge has over 30 years industrial experience in the extrusion and orientation of polypropylene and polyester films at ExxonMobil Chemical and ICI Americas Film Divisions. He managed the intellectual property of Mobil Chemical Films Division and has courtroom experience as an expert witness. A frequent contributor to SPE ANTEC, AIMCAL and TAPPI conferences, he is a member of the SPE Extrusion Division Board of Directors, and a Fellow and Honored Service Member of SPE. Appointed AIMCAL Metallizing Consultant in 2001 and a past VP of the Society of Plastics Engineers. He has a Bachelors degree in Chemistry from West Chester University and a ME and PhD in Chemical Engineering from Rensselear Polytechnic Institute.

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Eldridge M. Mount III

EMMOUNT Technologies, LLC

Beth M. Foederer

Optex Process Solutions, LLC